You are spot on Sandy. The ability of Schneider to access the wide range of optical glass and modern coatings melded well with the known ability of the Dagor to to produce a very large and highly desirable image circle for the class of customers these Fine Art Lenses were targeted for - ULF photographers. Schneider was also able to excise most of the undesirable components of this lens in the design as it sounds based upon your observations, that it is a marvelous optic to have in the field. Clearly the price to accomplish this package is a bit steep compared to the used market for Artars and others, but after I learned how financially challenging it is to bring a simple Artar type optic into the ULF market, the price now seems very reasonable for what is being delivered. Coming up with the money for it is a whole other matter.
Originally Posted by sanking
One of these days I hope to own a 550 XXL. But in the meantime I need to close some more deals in my business and then find one for sale. Eventually I found my 30" Red Dot and 305 Computar based upon your recommendations and am pleased with their performance.